# operator==,<=>(ranges::cartesian_product_view::iterator)

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< cpp‎ | ranges‎ | cartesian product view‎ | iterator

friend constexpr bool operator==( const /*iterator*/& x, const /*iterator*/& y ) requires std::equality_comparable<ranges::iterator_t</*maybe-const*/<Const, First>>>; | (1) | (since C++23)
friend constexpr bool operator==( const /*iterator*/& x, std::default_sentinel_t ); | (2) | (since C++23)
friend constexpr auto operator<=>( const /*iterator*/& x, const /*iterator*/& y ) requires /*all-random-access*/<Const, First, Vs...>; | (2) | (since C++23)

Compares two iterators or an iterator and a sentinel.

Let `current_` denote the underlying tuple of iterators.

1) Equivalent to: return x.current_ == y.current_;
2) Returns true if std::get<i>(x.current_) == ranges::end(std::get<i>(x.parent_->bases_)) is true for any integer 0 ≤ i ≤ sizeof...(Vs). Otherwise, returns false.
3) Equivalent to: return x.current_ <=> y.current_;

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when `std::ranges::cartesian_product_view::iterator<Const>` is an associated class of the arguments.

The `!=` operator is synthesized from `operator==`.

### Parameters

x, y | - | iterators or sentinels to compare

### Return value

The result of comparison.

### Example

| This section is incomplete Reason: no example

### See also

operator== (C++23) | compares a sentinel with an iterator returned from `cartesian_product_view::begin` (function)

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